No products in the cart.

What is the importance of studying …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

What is the importance of studying statistics?

Solve the equation. Sin2x + cosx = 0

  • 2 answers

Minakshi Kapoor 8 years, 5 months ago

Knowledge in statistics provides us with the necessary tools and conceptual foundations in quantitative reasoning to extract information intelligently from this sea of data.

Rashmi Bajpayee 8 years, 5 months ago

{tex}\sin 2x + \cos x = 0{/tex}

=>     {tex}\sin 2x = - \cos x{/tex}

=>     {tex}2\sin x.\cos x = - \cos x{/tex}

=>     {tex}\sin x = - {1 \over 2}{/tex}

=>     {tex}\sin x = \sin \left( {\pi + {\pi \over 6}} \right){/tex}

=>     {tex}\sin x = \sin {{7\pi } \over 6}{/tex}

=>     {tex}x = {{7\pi } \over 6} = {210^ \circ }{/tex}

https://examin8.com Test

Related Questions

2nC2:nC3=33:10
  • 0 answers
(3+i)x + (1-2i) y +7i =0
  • 1 answers
Find the product. (4x²) (–5³)
  • 0 answers
Express the complex number i-39
  • 0 answers
Square of 169
  • 1 answers
Ch 1 ke questions
  • 1 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Download myCBSEguide App